Sign in to follow this  
Guest jcomm

Fly!2 and slipstream effect revisited... An "invisible rudder"???

Recommended Posts

I am back to Fly!2 after a loooong while away from this great sim.I recall that one of the issues that made me leave about 2 years ago was the poor PC I then had. Things have changed, and Fly!2 flies... in my new (not top-notch) machine.There has allways been a very special sensation, when I use this sim, of really being there, and one that no other sim replicates as well (with the possible exception of Fligh Unlimited it it wasn't for the rather arcadish panels it comes with...).Well, back to Fly!2, there were allways some aspects of the FM which I found remarkable (still find!), and also a few that disappointed me. One of the major limitations, IMHO comes to torque & slipstream effects modelling. Fly!2 prop aircraft can have their props reved and re-reved without the slightest hint of slipstream effect on the tail surfaces. When using the ATR though, I noticed that sudden power changes induced abrupt pitch variations, which I believe might well be something programmed to simulate the effect of propwash on the horizontal stabilizer. I feel the effects is a little bit overdone, but something similar could probably be programmed and directly tied to power variations in terms of Yaw.Since I know nothing about Fly!2's internals I wonder if it would be possible to include some sort of invisible rudder that comes to play just when power changes are operated. On clockwise (as seen from the cockpit) rotatin props, and increase in power would usualy cause the tail to slide to the right due to propwash, and thus the nose to point left taking action from the pilot to counteract (using necessary amount of right rudder). Maybe one could program some "invisible rudder" that could induce that yaw moment when power increases, an the way around when throttle is retarded.A friend of mine who flies the ATP for real tells me that the aircraft requires a good deal of rudder trim both when power is increased (during climb) and when the throttles get retarded for descents. The "invisible rudder" could be used to model such effects?Other than that Fly!2 is remarkable in modelling assymetric thrust, and probably the only sim that models such details as the drag caused by assymetric use of cowl flaps on twin props!!!I think I am starting to love this sim again :-)

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

I just looked at the fly.ini file infly2/system folder/fly.iniI don't know if this is standard or not, or if some other problems decided on this setting?The setting in my file is:noPropTorque=1I assume this turns it off.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this